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## Math::Libgsl::Elementary cpan:FRITH last updated on 2020-09-04

Math-Libgsl-Elementary-0.0.3/ # NAME

Math::Libgsl::Elementary - An interface to libgsl, the Gnu Scientific Library - elementary functions.

# SYNOPSIS

```use Math::Libgsl::Elementary :ALL;
```

# DESCRIPTION

Math::Libgsl::Elementary provides an interface to the Elementary Functions in the libgsl, the GNU Scientific Library.

This package provides both the low-level interface to the C library (Raw) and a more comfortable interface layer for the Raku programmer.

Math::Libgsl::Elementary makes these tags available:

• :elem

• :smallint

### sub log1p(Num() \$x --> Num) is export(:elem)

Computes the value of log(1 + x).

### sub expm1(Num() \$x --> Num) is export(:elem)

Computes the value of exp(x) - 1.

### sub hypot(Num() \$x, Num() \$y --> Num) is export(:elem)

Computes the value of sqrt(x² + y²).

### sub hypot3(Num() \$x, Num() \$y, Num() \$z --> Num) is export(:elem)

Computes the value of sqrt(x² + y² + z²).

### sub ldexp(Num() \$x, Int \$e --> Num) is export(:elem)

Computes the value of x * 2ᵉ.

### sub frexp(Num() \$x --> List) is export(:elem)

Computes the value of f such that x = f * 2ᵉ. It returns a list of two values: f and e.

### sub int-pow(Num() \$x, Int \$e --> Num) is export(:smallint)

Computes the value of xᵉ with e ∈ ℤ.

### sub uint-pow(Num() \$x, UInt \$e --> Num) is export(:smallint)

Computes the value of xᵉ with e ∈ ℕ.

### sub pow2(Num() \$x --> Num) is export(:smallint)

Computes the value of x².

### sub pow3(Num() \$x --> Num) is export(:smallint)

Computes the value of x³.

### sub pow4(Num() \$x --> Num) is export(:smallint)

Computes the value of x⁴.

### sub pow5(Num() \$x --> Num) is export(:smallint)

Computes the value of x⁵.

### sub pow6(Num() \$x --> Num) is export(:smallint)

Computes the value of x⁶.

### sub pow7(Num() \$x --> Num) is export(:smallint)

Computes the value of x⁷.

### sub pow8(Num() \$x --> Num) is export(:smallint)

Computes the value of x⁸.

### sub pow9(Num() \$x --> Num) is export(:smallint)

Computes the value of x⁹.

# C Library Documentation

For more details on libgsl see https://www.gnu.org/software/gsl/. The excellent C Library manual is available here https://www.gnu.org/software/gsl/doc/html/index.html, or here https://www.gnu.org/software/gsl/doc/latex/gsl-ref.pdf in PDF format.

# Prerequisites

This module requires the libgsl library to be installed. Please follow the instructions below based on your platform:

## Debian Linux and Ubuntu 20.04

``````sudo apt install libgsl23 libgsl-dev libgslcblas0
``````

That command will install libgslcblas0 as well, since it's used by the GSL.

## Ubuntu 18.04

libgsl23 and libgslcblas0 have a missing symbol on Ubuntu 18.04. I solved the issue installing the Debian Buster version of those three libraries:

# Installation

To install it using zef (a module management tool):

``````\$ zef install Math::Libgsl::Elementary
``````

# AUTHOR

Fernando Santagata [email protected]